gap in a mountain ridge; col; notch
A geographical term for a sharp dip or pass in a mountain ridge, often used in hiking and mountaineering contexts. The word is a loan from German 'Gratlücke' or similar, and is typically written in katakana.
There are several gaps on this ridge, so let's proceed carefully.
After crossing the col, the view suddenly opened up.
鞍部 is a more technical geographical term for a saddle or col between two peaks, similar to キレット but less specific to sharp, narrow gaps.
Usually written in katakana; usually written in kana. This is the most common practical spelling.
Ateji kanji spelling; rarely used and may not be recognized by all readers.
Ateji kanji spelling; rarely used.
Ateji kanji spelling; rarely used.
Ateji kanji spelling; rarely used.
Likely derived from a German mountaineering term such as 'Gratlücke' (ridge gap) or 'Karette', adapted into Japanese as キレット. The exact origin is uncertain, but it is a specialized loanword used in hiking and climbing contexts.